Journals / Türk Biyokimya Dergisi / 2013 / Cilt: 38 - Sayı: 3

[Differentiation of hematopoietic stem cells isolated from peripheral blood to megakaryocyte]

Periferik kandan izole edilen hematopoietik kök İYİY hücrelerin megakaryosite farklılaştırılması

Pages
243–249
Publication Date
2022-11-05
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It is obvious that thispromising method needs further development for clinical applications.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: Thrombocytopenia remains a serious problem in patients treated with highdosechemotherapy and bone marrow transplantation.
📊
Key Findings & Data:In recent years, infusion of ex vivoexpanded megakaryocytes (Mk) progenitors into patients has been proposed as a strategyfor shortening the time of platelet engraftment.
💡
Conclusion & Impact:It is obvious that thispromising method needs further development for clinical applications.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Thrombocytopenia remains a serious problem in patients treated with highdosechemotherapy and bone marrow transplantation. In recent years, infusion of ex vivoexpanded megakaryocytes (Mk) progenitors into patients has been proposed as a strategyfor shortening the time of platelet engraftment. The development of in vitro culture methodsto obtain sufficient numbers of Mks from haematopoietic stem cells (HSC) is an importanttarget in basic and clinical research projects. The aim of this study was to develop a two-stepex vivo expansion culture system of Mk progenitors from peripheral blood stem cells (PBSC).Methods: PBSC were harvested from three healthy adult donors. CD34+ cells were isolatedand cultured in serum free media supplemented with thrombopoietin (TPO) (50 ng/ml),Interleukin 3 (IL-3) (20 ng/ml) and Interleukin 6 (IL-6) (20 ng/ml) for 12 days followed by anincubation with IL-6 (20 ng/ml) and TPO (50 ng/ml) for another 9 days. The differentiation ofMks was monitored by flow cytometry (% of CD34+/41+ cells). The morphology of the cellswas studied by light, electron and fluorescence microscopy.Results: Morphological analysis of cells generated after 7 days of culture showed typicalaspects of developing Mks. The percentage of CD41+ cells was higher than 70 on day 21.Conclusion: The results obtained in this study demonstrated that this two-step culturesystem is an effective method to obtain high rates of megakaryocytes. It is obvious that thispromising method needs further development for clinical applications.

Özet

Amaç: Yüksek doz kemoterapi veya hematopoietik kök hücre (HKH) transplantasyonusonrası oluşan şiddetli trombositopeni çok ciddi klinik sorunlara yol açmaktadır. Sonzamanlarda, trombositopeni ve benzer durumların tedavisi için ex vivo olarak farklılaştırılmışmegakaryosit-progenitör hücrelerin (MPH) hastalara verilmesi üzerinde yoğun araştırmalaryapılmaktadır. Çeşitli kaynaklardan elde edilen HKH'lerin MPH ve megakaryositlerefarklılaştırılmasıyla ilgili yeni tekniklerin geliştirilmesi temel ve klinik çalışmalarbakımından büyük bir önem taşımaktadır. Bu çalışmada, periferik kandan izole edilenHKH'lerin ex vivo iki aşamalı likit kültür yöntemiyle megakaryosite kadar farklılaştırılmasıamaçlanmıştır.Yöntem: Sağlıklı 3 donörden izole edilen mononüklear hücrelerden CD34+ HKH'ler eldeedildi. Kök hücreler, önce 12 gün boyunca trombopoietin (TPO) (50 ng/ml), interlökin-3 (IL-3) (20 ng/ml) ve interlökin 6 (IL-6) (20 ng/ml) içeren serumsuz medyumda, daha sonra 9gün boyunca IL-6 (20 ng/ml) ve TPO (50 ng/ml) içeren serumsuz medyumda inkübe edildi.Megakaryositlerin farklılaşması, % CD34/41 oranlarına bakılarak akım sitometrik yöntemleizlendi. Hücrelerin morfolojik incelemeleri ise ışık, elektron ve floresans mikroskopla yapıldı.Bulgular: Morfolojik değerlendirmeler sonucunda kültürün 7. gününden itibarenmegakaryositlerin oluşmaya başladığı; kültürün 21. gününde oluşan megakaryosit oranınınise >%70 olduğu saptandı.Sonuç: Elde edilen sonuçlar, uygulanan iki aşamalı hücre kültür yönteminin megakaryositleriyüksek oranda elde etmede etkin bir yöntem olabileceğini ortaya koymaktadır. Bununlabirlikte, ümit vadeden bu metodun klinik uygulamalar açısından geliştirilmesi gerekmektedir.

🔖

Cite This Article

ÖZAKPINAR, Ö. B., DEMİR, M., MAURER, A., ADIGÜZEL, C., URAS, F., ÇİLİNGİR, Ö. T. (2022). [Differentiation of hematopoietic stem cells isolated from peripheral blood to megakaryocyte]. Türk Biyokimya Dergisi, Cilt: 38 - Sayı: 3, 243–249. https://ajindex.com/articles/621315

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. Decaudin D, Vantelon JM, Bourhis JH, Farace F, Bonnet ML et al. Ex vivo expansion of megakaryocyte precursor cells in autologous stem cell transplantation for relapsed malignant lymphoma. Bone Marrow Transplantation 2004; 34:1089-93
  2. Prince HM, Simmons PJ, Whitty G, Wall DP, Barber L et al. Improved haematopoietic recovery following transplantation with ex vivo-expanded mobilized blood cells. Br J Haematol 2004; 126:536-45
  3. Huang H and Cantor AB. Common features of megakaryocytes and hematopoietic stem cells: What's the connection? J Cell Biochem 2009; 107: 857-64
  4. Caux C, Favre C, Saeland S, Duvert V, Mannoni P et al. Sequential loss of CD 34 and class II MHC antigens on purified cord blood hematopoietic pro-genitors cultured with IL-3: characterization of CD 34-HLA-DR+ cells. Blood 1989; 4:1287-94
  5. Zauli G, Vitale M, Falcieri E, Gibellini D, Bassini A et al. In vitro senescence and apoptotic cell death of human megakaryocytes. Blood 1997; 90 (6):2234-43
  6. Möhle R, Bautz F, Rafii S, Moore MA, Brugger W et al. The chemokine receptor CXCR-4 is expressed on CD 34+ hematopoietic progenitors and leukemic cells and mediates transendothelial migration induced by stromal cell-derived factor-1. Blood 1998; 91(12):4523-30. [7] de Sauvage FJ, Hass PE, Spencer SD, Malloy BE, Gurney AL et al. Stimulation of megakaryocytopoiesis and thrombopoiesis by the c-Mpl ligand. Nature 1994; 369:533-38
  7. Kaushansky K. The mpl ligand: molecular and cellular biology of the critical regulator of megakaryocyte. Stem Cells 1994; 12:91-6
  8. Kaushansky K. The molecular mechanisms that control thrombopoiesis. J Clin Invest 2005; 115 (12):3339-47
  9. Su RJ, Yang M, Zhang XB, Tsang KS, Fok TF et al. Platelet derived growth factor enhances ex vivo expansion of megakaryocytic progenitors from human cord blood. Bone Marrow Transplantation 2001; 27: 1075-80
  10. Ungerer M, Peluso M, Gillitzer A, Massberg S, Heinzmann U et al. Generation of functional culture-derived platelets from CD34+ progenitor cells to study transgenes in the platelet environment. Circ Res 2004; 95(5):36-44
  11. Boyer L, Robert A, Proulx C, Pineault N. Increased production of megakaryocytes near purity from cord blood CD34+ cells using a short two-phase culture system. J Immunol. Methods 2008; 332 (1-2): 82-91
  12. Navarro S, Debili N, Le Couedic JP, Klein B, Breton-Gorius J et al. Interleukin-6 and its receptor are expressed by human megakaryocytes: in vitro effects on proliferation and en